Q: What are the prime factors of the number 119,242,368?

 A: 2, 3, 7, 31, 53

Why are those the prime factors of the number 119,242,368?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 119,242,368

119,242,368
Factor Arrows
259,621,184
Factor Arrows
229,810,592
Factor Arrows
214,905,296
Factor Arrows
27,452,648
Factor Arrows
23,726,324
Factor Arrows
21,863,162
Factor Arrows
2931,581
Factor Arrows
3310,527
Factor Arrows
3103,509
Factor Arrows
334,503
Factor Arrows
311,501
Factor Arrows
71,643
Factor Arrows
3153

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 31, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 7 x 31 x 53 = 119,242,368

This can also be written as 27 x 34 x 71 x 311 x 531 = 119,242,368

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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